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palette_gc
--datasheet--
--styleguide--
PALETTE_GetClass
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Docs » Autodocs » palette_gc » --datasheet--
palette_gc -- A colour selection gadget.
gadgetclass
bevel.image
This gadget is equivalent to the GadTools PALETTE_KIND gadget, but
implemented as a BOOPSI gadget class. It displays a palette of
colours, allowing the user to select one.
Advantages that this class provides:
> Right mouse button cancels gadget action.
> Supports window relativity.
> Supports gadget interconnections.
> Supports OS 3.0 BOOPSI Gadget HelpTest.
OM_NEW -- Create the palette gadget, calls OM_SET. Passed to
superclass.
OM_SET -- Set object attributes. Passed to superclass first.
OM_GET -- Get object attributes. Passed to superclass first.
OM_NOTIFY -- Notify connections of attribute changes.
OM_DISPOSE -- Frees resources and calls superclass.
OM_UPDATE -- Calls OM_SET.
GM_DOMAIN -- Return the maximum and minimum size of the gadget.
GM_RENDER -- Renders the gadget imagry. Overrides the superclass.
GM_KEYACTIVE -- Handles keyboard activation.
GM_KEYINACTIVE -- Handles keyboard de-activation.
GM_GOACTIVE -- Activate the gadget on mouse click only. Overrides
the superclass.
GM_HANDLEINPUT -- Handles input events once active. Overrides the
superclass.
GM_GOINACTIVE -- Deactivates the gadget. Passed to the superclass.
All other methods are passed to the superclass.
GA_Disabled (BOOL)
Set to TRUE to disable gadget, FALSE otherwise
Defaults to FALSE.
Applicability is (OM_NEW, OM_SET, OM_GET)
PALETTE_Colour (UBYTE)
Initially selected color of the palette. This number is a pen
number, and not the ordinal color number within the palette
gadget itself. The exception is when PALETTE_ColourTable is
used, in which case you will get an index into your table.
Defaults to 0.
Applicability is (OM_NEW, OM_SET, OM_GET)
PALETTE_ColourOffset (UBYTE)
First color to use in screen palette.
Defaults to 0.
Applicability is (OM_NEW, OM_SET, OM_GET)
PALETTE_ColourTable (UBYTE *)
Pointer to a table of pen numbers indicating which colors
should be used and edited by the palette gadget. This array
must contain as many entries as there are colors displayed in
the palette gadget PLUS the colour offset. The array provided
with this tag must remain valid for the life of the gadget or
until a new table is provided.
Default is NULL, which causes a 1-to-1 mapping of pen numbers.
Applicability is (OM_NEW, OM_SET, OM_GET)
PALETTE_NumColours (UWORD)
Number of colors to display in the palette gadget. Currently
this MUST be a power of
Defaults to 2.
Applicability is (OM_NEW, OM_SET, OM_GET)
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